Question

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… main systems of … body have groups of organs working together to perform complex functions.

… mouth, esophagus, stomach, small and large intestines are organs which compose … digestive system.

There are some organs within … each system.

… circulatory system is also called … cardiovascular system.

The main function of … respiratory system is to convey … oxygen and to remove … carbon dioxide

Answer 1

The main... of a body ... a mouth ... the digestive ... of each ... the circulatory ... a cardiovascular ... the respiratory .. the pxygen .... the carbon